<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			#divv {
				color:#ffff00
			}
			div{
				color: red !important;
			}
		</style>
	</head>
	<body>
		<div style="color:blue" id="divv">是个div</div>
	</body>
</html>